This is a forum to discuss the creation of a community-designed UAV airframe that can be put into production. Once the basic scope and core participants of the projects have been decided on, we can move the project to a Huddle workspace for the actual design, planning and collaboration.
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Hey All, After talking to Chris (for approval) I have created a workspace to build on these discussions - I will be sending friend invites so that I can add you to the workspace - let me know if you'd like to be a part of this, or have skillz we need!! Looking forward to building something cool with you guys!!
A 500g payload is a 500g payload, the airframe must also lift itself, control and power system.
What you want to add in that 500g is upto you.
@ Morli
Well in UK 7kg is the top of the first UAS limit and 70 knots, yes just look at those mixed units, is the top speed allowed.
So thats 6.5 kg for airframe, power, stuff that is an awful lot. Our Manta flying wing weighs 2kg all up if you really really really add lots of strapping tape. The wing we have started working on will be close on 2m wingspan and we still think will be under 3.5 kg.
Next on my list of needs is hotel power for the 500g payload. I'm planning an Axis 207MW wifi camera, with a Sherrine bidirectional amp for the camera datalink. That's about 1300 mA at 5 V for 45 minutes, or 4875 mAh of hotel power.
Gary, I think these threads bog down when we get to the "mission issue". There doesn't seem to be much consensus about what the mission spec (especially payload and endurance) should be. Some folks don't understand yet how the mission spec might affect the design. People aren't on the same page for what we should be talking about, and the conversation breaks down.
Maybe this needs to split into two threads -- one on requirements & design, and another on requirements for a consensus design (or designs).
So it seems that this entire system should be able to be modular and maybe even scalable with the ability to handle as many different tasks as possible. (I know that sounds elementary)
Some ideas I had are simple things like:
-having the wings have a main section and a tip section so that it is modular/stack-able. You could add or take away sections to account for different loads. I have done this before and the option is very useful.
-The Engine can be user selected to the job at hand.
-The electronics should be as far aft as possible to be able to survive mishaps.
-Should be Tractor design (for simplicity only)
-Fuel or Batt should be interchangeable in a set module.
-Payload bay should be a simple stack-able design to be able to handle more than one task on each flight and of course be modular and interchangeable.
Most of what I am saying has been said already but just wanted to add to the many great ideas out there.
Well, I don't have many skills to bring to the table when it comes to airplane design, but I'd love to be a part of this collaboration. If you have any boring/repetitive/easy jobs that nobody wants, count me in! :P
Replies
As ever on this sort of build thread, ie not buying one off the shelf, have not nailed downed a design brief.
I use the same foam for moulding.
I use mine with Epoxy/Carbon fuselage.. believe me! It so strong. Lost a wing in flight 50 m. drop. After 5 min. it was ready to fly again.
If thats the case then why does the predator, reaper, global hawk etc use ailerons?
surely flapperons dont decrease glide ratio????
Can you just explain it a bit more cause if thats the case my whole first year of aerodynamics has just confused the hell out of me.....
What you want to add in that 500g is upto you.
@ Morli
Well in UK 7kg is the top of the first UAS limit and 70 knots, yes just look at those mixed units, is the top speed allowed.
So thats 6.5 kg for airframe, power, stuff that is an awful lot. Our Manta flying wing weighs 2kg all up if you really really really add lots of strapping tape. The wing we have started working on will be close on 2m wingspan and we still think will be under 3.5 kg.
An airframe that weighs 5kg is really quite big.
Maybe this needs to split into two threads -- one on requirements & design, and another on requirements for a consensus design (or designs).
Some ideas I had are simple things like:
-having the wings have a main section and a tip section so that it is modular/stack-able. You could add or take away sections to account for different loads. I have done this before and the option is very useful.
-The Engine can be user selected to the job at hand.
-The electronics should be as far aft as possible to be able to survive mishaps.
-Should be Tractor design (for simplicity only)
-Fuel or Batt should be interchangeable in a set module.
-Payload bay should be a simple stack-able design to be able to handle more than one task on each flight and of course be modular and interchangeable.
Most of what I am saying has been said already but just wanted to add to the many great ideas out there.
Jason in Hawaii
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